GOB: Implement shooting in Penetration

Geisha's Penetration minigame should be complete now.
This also means that Geisha is now basically complete.

The only thing missing is the MDYPlayer, but since the
music is only played once during the title screen, and it
has a PCM-based fallback (which is currently played), this
is low priority.

1 files changed, 28 insertions, 6 deletions

diff --git a/engines/gob/minigames/geisha/penetration.h b/engines/gob/minigames/geisha/penetration.h
index 9abae258b2..50004eba8e 100644
--- a/engines/gob/minigames/geisha/penetration.h
+++ b/engines/gob/minigames/geisha/penetration.h
@@ -65,7 +65,8 @@ private:
 	static const byte kPalettes[kFloorCount][3 * kPaletteSize];
 	static const byte kMaps[kModeCount][kFloorCount][kMapWidth * kMapHeight];
 
-	static const int kEnemyCount = 9;
+	static const int kEnemyCount     =  9;
+	static const int kMaxBulletCount = 10;
 
 	struct MapObject {
 		uint16 tileX;
@@ -122,6 +123,18 @@ private:
 		void clear();
 	};
 
+	struct ManagedBullet : public MapObject {
+		ANIObject *bullet;
+
+		int16 deltaX;
+		int16 deltaY;
+
+		ManagedBullet();
+		~ManagedBullet();
+
+		void clear();
+	};
+
 	enum Keys {
 		kKeyUp = 0,
 		kKeyDown,
@@ -163,10 +176,13 @@ private:
 	Common::List<MapObject>    _shields;
 	Common::List<ManagedMouth> _mouths;
 
-	ManagedEnemy _enemies[kEnemyCount];
+	ManagedEnemy  _enemies[kEnemyCount];
+	ManagedBullet _bullets[kMaxBulletCount];
 
 	Common::List<MapObject *> _blockingObjects;
 
+	uint8 _shotCoolDown;
+
 	SoundDesc _soundShield;
 	SoundDesc _soundBite;
 	SoundDesc _soundKiss;
@@ -191,10 +207,8 @@ private:
 	void drawFloorText();
 	void drawEndText();
 
-	bool isBlocked(const MapObject &self, int16 x, int16 y,
-	               const MapObject *checkBlockedBy = 0, bool *blockedBy = 0) const;
-	void findPath(MapObject &obj, int x, int y,
-	              const MapObject *checkBlockedBy = 0, bool *blockedBy = 0) const;
+	bool isBlocked(const MapObject &self, int16 x, int16 y, MapObject **blockedBy = 0);
+	void findPath(MapObject &obj, int x, int y, MapObject **blockedBy = 0);
 
 	void updateAnims();
 
@@ -206,6 +220,14 @@ private:
 	void subMove(int x, int y, Submarine::Direction direction);
 	void subShoot();
 
+	int findEmptyBulletSlot() const;
+	uint16 directionToBullet(Submarine::Direction direction) const;
+	void setBulletPosition(const ManagedSub &sub, ManagedBullet &bullet) const;
+
+	void bulletsMove();
+	void bulletMove(ManagedBullet &bullet);
+	void checkShotEnemy(MapObject &shotObject);
+
 	void checkExits();
 	void checkShields();
 	void checkMouths();